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[vsnet-grb-info 39887] EP250911a: Global MASTER-Net observations report
by GCN Circulars 13 Sep '25

13 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41821 SUBJECT: EP250911a: Global MASTER-Net observations report DATE: 25/09/13 00:18:39 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the EP250911a ( EP Team et al., GCN 41788) errorbox 27051 sec after notice time and 30571 sec after trigger time at 2025-09-11 17:27:59 UT, with upper limit up to 13.6 mag. Observations started at twilight. The observations began at zenith distance = 57 deg. The sun altitude is -15.9 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the EP250911a errorbox 1 days 51178 sec after notice time and 1 days 54698 sec after trigger time at 2025-09-13 00:10:06 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 34 deg. The sun altitude is -27.5 deg. The galactic latitude b = -32 deg., longitude l = 108 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2989778 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 13450 | 2025-09-11 12:42:07 | MASTER- | (23h 49m 56.46s , +28d 43m 10.6s) | C | 60 | 16.4 | Coadd 30602 | 2025-09-11 17:27:59 | MASTER-Tavrida | (23h 49m 27.05s , +29d 17m 08.7s) | C | 60 | 13.6 | 141129 | 2025-09-13 00:10:06 | MASTER-Kislovodsk | (23h 49m 03.03s , +29d 23m 20.1s) | C | 60 | 17.1 | 141292 | 2025-09-13 00:12:50 | MASTER-Kislovodsk | (23h 49m 01.01s , +29d 23m 04.4s) | C | 60 | 17.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/41821. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39886] GRB 250912A: SVOM detection of a burst
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41820 SUBJECT: GRB 250912A: SVOM detection of a burst DATE: 25/09/12 21:58:10 GMT FROM: SVOM_group <svomgroup(a)bao.ac.cn> Jean-Grégoire Ducoin (CPPM), Damien Dornic (CPPM), Hui Yang (IRAP), Chenwei Wang (IHEP) , Hatsune Goto (Kanazawa Univ./CEA), report on behalf of the SVOM mission team: At 2025-09-12T21:06:24 UTC (T0), SVOM/ECLAIRs triggered and located the gamma-ray burst GRB 250912A (SVOM burst-id sb25091206). This transient was also detected by Fermi/GBM (GCN Circular 41819). The following trigger information was received on the ground with low latency by the SVOM VHF Alert Network. The burst was detected both by the Count-Rate Trigger (CRT) and the Image Trigger (IMT), which produced a sequence of 14 alerts. IMT provided the alert with the best signal-to-noise-ratio in the image (SNR) of 11.88 in the [8-120] keV energy band over a time window of 20.48 seconds starting at 2025-09-12T21:06:19. The localization of the best alert is R.A., Dec. 14.9546, 11.1084 degrees (J2000) with a 90% confidence level (C.L.) radius of 6.78 arcmin (including systematic error of 2 arcmin added in quadrature). This burst also triggered SVOM/GRM at 2025-09-12T21:06:23 on a timescale of 0.10 seconds with an SNR of 6.20. SVOM slewed to the burst. SVOM/MXT began observing the field at 2025-09-12T21:09:18 UTC, 174 seconds after T0. Using onboard processed data we found an uncatalogued X-ray source located at R.A., Dec. 14.953, 11.137 degrees: R.A. (J2000) = 0h59m48.72s Dec. (J2000) = 11d08m12.88s with a 90% C.L. radius of 143 arcseconds. This location is 1.7 arcminutes from the ECLAIRs onboard position. This position may be improved as more data is received. VT began observing the field after the slew. The analysis of the data will be published in a future circular. The Space-based multi-band astronomical Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA), French Space Agency (CNES), and the Chinese Academy of Sciences (CAS), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. SVOM/ECLAIRs was developed jointly by CNES, CEA-IRFU, CNRS-IRAP, CNRS-APC. SVOM/GRM was developed by the Institute of High Energy Physics (IHEP) of CAS. SVOM/MXT was developed jointly by CNES, CEA-IRFU, CNRS-IJCLab, University of Leicester, MPE. The Burst Advocate (BA) on shift for this alert is Jean-Gregoire Ducoin: ducoin(a)cppm.in2p3.fr. Please contact the BA by email if you require additional information. View this GCN Circular online at https://gcn.nasa.gov/circulars/41820. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39885] GRB 250912A: Fermi GBM Final Real-time Localization
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41819 SUBJECT: GRB 250912A: Fermi GBM Final Real-time Localization DATE: 25/09/12 21:17:50 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply(a)GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 21:06:23 UT on 12 Sep 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250912A (trigger 779403988.636734 / 250912879). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 13.9, Dec = 24.3 (J2000 degrees, equivalent to J2000 00h 55m, 24d 18'), with a statistical uncertainty of 7.9 degrees. The angle from the Fermi LAT boresight is 62.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250912879/… The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250912879/… The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250912879/… View this GCN Circular online at https://gcn.nasa.gov/circulars/41819. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39884] IceCube-Cascade 250911A: Upper limits from a search for additional neutrino events in IceCube
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41818 SUBJECT: IceCube-Cascade 250911A: Upper limits from a search for additional neutrino events in IceCube DATE: 25/09/12 20:17:38 GMT FROM: Alicia Mand at IceCube/UW-Madison <aemand(a)wisc.edu> The IceCube Collaboration (http://icecube.wisc.edu/) reports: IceCube has performed a search [1] for additional track-like muon neutrino events arriving from the direction of IceCube-Cascade 250911A (https://gcn.gsfc.nasa.gov/notices_amon_icecube_cascade/141344_29341777.amon) in a time range of 1000 seconds centered on the alert event time (2025-09-11 04:20:17.140 UTC to 2025-09-11 04:36:57.140 UTC) during which IceCube was collecting good quality data. Excluding the event that prompted the alert, two track-like events are found within the 90% containment region of IceCube-Cascade 250911A. We find that these additional 2 events are well described by atmospheric background expectations, with a p-value of 0.01. IceCube’s sensitivity to neutrino point sources with an E^-2.5 spectrum, expressed as E^2 dN/dE evaluated at 1 TeV, ranges from 1.3e-01 to 6.1e+00 GeV cm^-2 within the 90% spatial containment region of IceCube-Cascade 250911A in a 1000 second time window. 90% of events IceCube would detect from a source at this declination with an E^-2.5 spectrum have energies in the approximate energy range between 2e+02 GeV and 3e+06 GeV. A subsequent search was performed including 2 days of data centered on the alert event time (2025-09-10 04:28:37.140 UTC to 2025-09-12 04:28:37.140 UTC). In this case, we report a p-value of 0.23, consistent with no significant excess of track events. IceCube’s sensitivity to neutrino point sources with an E^-2.5 spectrum, expressed as E^2 dN/dE evaluated at 1 TeV, ranges from 1.5e-01 to 6.2e+00 GeV cm^-2 within the 90% spatial containment of IceCube-Cascade 250911A in a 2 day time window. The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc(a)icecube.wisc.edu. [1] IceCube Collaboration, R. Abbasi et al., ApJ 910 4 (2021) View this GCN Circular online at https://gcn.nasa.gov/circulars/41818. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39883] LIGO/Virgo/KAGRA S250912s: 2 counterpart neutrino candidate events from an IceCube neutrino search
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41817 SUBJECT: LIGO/Virgo/KAGRA S250912s: 2 counterpart neutrino candidate events from an IceCube neutrino search DATE: 25/09/12 20:13:49 GMT FROM: Zsuzsa Marka at IceCube/Columbia University <zsuzsa(a)astro.columbia.edu> IceCube Collaboration (http://icecube.wisc.edu/) reports: We have performed a search for track-like muon neutrino candidate events detected by IceCube consistent with the sky localization of the low-significance gravitational-wave candidate event S250912s in a time range of 1000 seconds centered on the alert event time (2025-09-12 18:13:09 UTC to 2025-09-12 18:29:49 UTC) [1,2]. During this time period, IceCube was collecting good quality data. A single hypothesis test was conducted using a Bayesian approach to quantify the joint GW + neutrino event significance, which assumes a binary merger scenario and accounts for known astrophysical priors, such as GW source distance, in the statistical significance estimation [3]. Two track-like events were found in spatial and temporal coincidence with the gravitational-wave candidate S250912s calculated from the map circulated in the S250912s-2-Preliminary notice. This represents an overall p-value of 0.00927 for the Bayesian search. The p-value measures the consistency of the observed track-like events with the known atmospheric backgrounds for this single map (not accounting for statistical trials from multiple GW events). Further details are available at https://gcn.nasa.gov/missions/icecube and at https://roc.icecube.wisc.edu/public/LvkNuTrackSearch. Properties of the coincident event are shown below: dt(s) RA(deg) Dec(deg) Angular uncertainty(deg) p-value(Bayesian) ------------------------------------------------------------------------------------- -276.12 284.52 44.13 16.11 0.0115 19.10 275.72 24.65 1.44 0.0530 where: dt = Time of track event minus time of GW trigger (sec) Angular uncertainty = Angular uncertainty of track event: the radius of a circle representing 90% CL containment by area. p-value = the individual p-value for the specific track event from this search. The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc(a)icecube.wisc.edu [1] M. G. Aartsen et al 2020 ApJL 898 L10 [2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80 [3] I. Bartos et al. 2019 Phys. Rev. D 100, 083017 View this GCN Circular online at https://gcn.nasa.gov/circulars/41817. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39882] EP250908c: tentative VLT/FORS2 redshift z = 2.87
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41816 SUBJECT: EP250908c: tentative VLT/FORS2 redshift z = 2.87 DATE: 25/09/12 16:10:17 GMT FROM: Daniele Bjørn Malesani at Cosmic Dawn Center, Niels Bohr Institute <daniele.malesani(a)nbi.ku.dk> D. B. Malesani (DAWN/NBI and Radboud), L. Izzo (INAF/OACn and DARK/NBI), A. Saccardi (CEA/Irfu), J. An (NAOC), G. Corcoran (UCD), V. D’Elia (ASI/SSDC), M. Garnichey (LUX-Paris Obs.), P. G. Jonker (Radboud), A. J. Levan (Radboud and Warwick), A. Martin-Carrillo (UCD), E. Palazzi (INAF/OAS), G. Pugliese (API), D. Xu (NAOC), report on behalf of a larger collaboration: We observed the optical counterpart (Malesani et al., GCN 41760; Ma et al., GCN 41761; Rau, GCN 41773) of the fast X-ray transient EP250908c (Zhang et al., GCNs 41754, 41763) using the ESO VLT UT1 equipped with the FORS2 spectrograph. In the acquisition image (mid time 2025 Sep 9.134 UT, or 3.37 hr after the EP trigger) we measure a magnitude V = 21.4 +- 0.2 (calibrated using archival zeropoints). A spectrum covering the wavelength range 3800-8600 AA was secured using grism 300V and no order-sorting filter, with a total exposure time of 3x600 s. A faint trace is detected down to ~4790 AA, where a spectral break is observed. If due to Lyman alpha, this would correspond to a redshift of ~2.9. Consistently, a few, weak absorption features are detected, which can be interpreted as C II 1334, Si IV 1393,1402, Si II 1526, C IV 1548,1550, all at a common redshift of z = 2.87. Given the low S/N of the continuum, we caution that this redshift solution should be considered tentative. Rectifying what was stated in our previous report (Malesani et al., GCN 41760), we note the presence of an extended object in the Legacy Survey underlying the afterglow position, which is a candidate host galaxy for EP250908c. With a Legacy Survey magnitude of r = 23.1, this corresponds to M(UV) = -22.4 (AB) at z = 2.87. No emission lines are visible in our spectrum to determine the redshift of this object. We acknowledge excellent support from the observing staff in Paranal, in particular Julien Drevon, Jonathan Smoker and Marcela Espinoza. View this GCN Circular online at https://gcn.nasa.gov/circulars/41816. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39881] EP250911a: Upper limit from Fermi-GBM Observations
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41815 SUBJECT: EP250911a: Upper limit from Fermi-GBM Observations DATE: 25/09/12 14:23:51 GMT FROM: mariaedvige.ravasio(a)ru.nl M. E. Ravasio and P.G. Jonker (Radboud Univ.) on behalf of the Einstein Probe Team and E. Burns (LSU) on behalf of the Fermi-GBM Team, report: Fermi-GBM had full spatial coverage of the transients EP250911a (Liang et al., GCN 41788 and GCN 41809) detected by EP-WXT, and found to be at z=3.84 (Malesani et al., GCN 41811). There was no Fermi-GBM onboard trigger around the refined EP trigger time T0=2025-09-11T08:57:55 (UTC). The GBM targeted search [1], the most sensitive, coherent search for GRB-like signals, was run in the time interval [T0-50; T0+500] s, seeking signals between 64 ms and 32.768 s in duration. No signal consistent with the EP transients, both temporally and spatially, is identified, as confirmed also by visual inspection of the data. Assuming a “normal” spectral template (Band function with Epeak = 230 keV, alpha = -1.0, beta = -2.3), whose alpha value is consistent with the power law index reported by EP (Liang et al., GCN 41809), and a timescale of 8.192 s, we derive a flux upper limit of 5.3e-08 erg/cm2/s in the energy band 10-1000 keV. [1] Goldstein et al. 2019 arXiv:1903.12597 View this GCN Circular online at https://gcn.nasa.gov/circulars/41815. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39880] LIGO/Virgo/KAGRA S250912f: Updated Sky localization
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41814 SUBJECT: LIGO/Virgo/KAGRA S250912f: Updated Sky localization DATE: 25/09/12 13:28:26 GMT FROM: natalie.williams(a)uni-potsdam.de The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report: We have conducted further analysis of the LIGO Livingston Observatory (L1) and Virgo Observatory (V1) data around the time of the compact binary merger (CBC) candidate S250912f (GCN Circular 41810). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN and SCiMMA notices, is available for retrieval from the GraceDB event page: https://gracedb.ligo.org/superevents/S250912f For the Bilby.multiorder.fits,0 sky map, the 90% credible region is 298 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2740 +/- 722 Mpc (a posteriori mean +/- standard deviation). For further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/. [1] Ashton et al. ApJS 241, 27 (2019) doi:10.3847/1538-4365/ab06fc and Morisaki et al. PRD 108, 123040 (2023) doi:10.1103/PhysRevD.108.123040 View this GCN Circular online at https://gcn.nasa.gov/circulars/41814. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39879] GRB 250911A: GECAM-B detection
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41813 SUBJECT: GRB 250911A: GECAM-B detection DATE: 25/09/12 13:00:39 GMT FROM: zhangjinpeng(a)ihep.ac.cn Jin-Peng Zhang, Yang-Zhao Ren, Chen-Wei Wang, Shao-Lin Xiong and Yue Huang (IHEP) report on behalf of GECAM team: GECAM-B was triggered on-ground by GRB 250911A at 2025-09-11T01:29:28.250 UTC (denoted as T0), which was also observed by Swift (Palmer et al., GCN 41781). According to the GECAM-B light curves in about 40-6000 keV, this burst mainly consists of a weak precursor and a bright pulse with multiple spikes, with a duration (T90) of 35.4 +1.1/-1.7 s. The GECAM-B light curve can be found here: https://www.bursthub.cn//admin/static/gecambgrb250911A.png GECAM-B localized this burst to the following position (J2000): Ra: 262.0 deg Dec: -20.2 deg Err: 4.1 deg (1-sigma, statistical only) This localization is consistent with Swift observation (Palmer et al., GCN 41781; Beardmore et al., GCN 41784). The time-averaged spectrum from T0 - 5 s to T0 + 40 s is best fitted by a power law function with an exponential high-energy cutoff. The power law index is -1.52 +0.10/-0.12 and the cutoff energy, parameterized as Epeak, is 330 +180/-80 keV. The event fluence (10-1000 keV) in this time interval is (3.52 +0.25/-0.32)E-05 erg/cm^2. The 'Amati' relation diagram of GRB 250911A is shown at: https://www.bursthub.cn//admin/static/gecambgrb250911A_amati.png Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS). View this GCN Circular online at https://gcn.nasa.gov/circulars/41813. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 39878] GRB 250911A: Swift-BAT refined analysis
by GCN Circulars 12 Sep '25

12 Sep '25

TITLE: GCN CIRCULAR NUMBER: 41812 SUBJECT: GRB 250911A: Swift-BAT refined analysis DATE: 25/09/12 10:16:27 GMT FROM: Rahul Gupta at NASA GSFC <rahul.gupta(a)nasa.gov> D. M. Palmer (LANL), S. D. Barthelmy (GSFC), R. Gupta (GSFC), N. J. Klingler (GSFC/UMBC/CRESSTII), H. A. Krimm (NSF), S. Laha (GSFC/UMBC), A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), M. J. Moss (GSFC), T. Parsotan (GSFC), D. Sadaula (GSFC/UMBC), T. Sakamoto (AGU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+200 sec from the recent telemetry downlink, we report further analysis of BAT GRB 250911 A (trigger #1348587) (Klingler, et al., GCN Circ. 41781). The BAT ground-calculated position is RA, Dec = 263.752, -16.841 deg which is RA(J2000) = 17h 35m 00.6s Dec(J2000) = -16d 50' 28.0" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 29%. The mask-weighted BAT light curve shows two emission episodes (a precursor followed by main emission) separated by quiescent gap of ~ 80 sec. T90 (15-350 keV) is 128.42 +- 87.23 sec (estimated error including systematics). The time-averaged spectrum from T-1.35 to T+147.24 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.00 +- 0.20, and Epeak of 170.5 +- 84.5 keV (chi squared 56.83 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 1.5 +- 0.0 x 10^-05 erg/cm2 and the 1-sec peak flux measured from T+103.94 sec in the 15-150 keV band is 8.6 +- 0.6 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.35 +- 0.05 (chi squared 66.73 for 57 d.o.f.). All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at https://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1348587 View this GCN Circular online at https://gcn.nasa.gov/circulars/41812. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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